Rock and ore crushing machine



3 Sheets-Sheet l, D. R. FRASER.

Patented Mar. 10, 1885.

ROCK AND ORE GRUSHING MACHINE.

LNo Model.)

3 Sheets-Sheet 2.

(VNO Model.) Y y l D. R. FRASER.

ROCK AND ORB GRUSHING MACHINE. No. 818,818. l Patented Mar; 10, 1885.

(No Model.) 8 sheensslheet 8.

' D. R. FRASER. I

ROCK AND ORE GRUSHING MACHINE.

180.818,818 Patented M811. 1o, 1885.

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DAVID It. FRASER, OF CHICAGO, ILLINOIS.

ROCK AND ORE CRUSHING MACHlNE.

.EEIFIGATION forming part of Letters Patent No. 313,818, dated March 10, 1885.

Application filed October 29, 1884. (No model.)

To all whom t may concern:

Be it known that I, DAVID R. FRAsER, of Chicago, in Cook county, Illinois, have invented new and useful Improvements in Rock and Ore Crushing Machines; and I do hereby declare that the following is a full and accurate description of the same.

My invention relates to that class of crushers wherein there is a concave bed and a gyrating breaker-head; and it relates, first, to the structure of the frame and chute, second, to the bearing for the head of the gyrating spindle; third, to the provision for lubricating the bearings.

In the accompanying drawings, Figure lis avertical central section of my machine. Fig.

2 is a similar section of the lower part, showingaslight modification. Fig. 3 is a front elevation of the lower part, partly in section. Figs. et, 5, 6, and 7 are details. Fig. 8 is an enlarged section of the Aspindle-step.

The frame is made in two parts, J and F, The upper part, J, contains the breaker-segments K, which are removable when worn or broken, and is surmounted by hopper H, which is provided with the spindle-head box M, supported on said hopper by the three arms L. The lower section, F, is provided with theinclined diaphragm G and sleeve g, cast integral with section F, and thereby the tting and securing of separate pieces of irregular form are avoided, and also the pressure of joints in which particles of ore will lodgeand be lost. The diaphragm is made integral with the frame, and adds strength and stiffness to the same. XlVhen the diaphragm Gis extended entirely across the section F, as has heretofore been done, so as to constitute a complete chute for the crushed mineral, it` prevents access to the main wheel C, whereby motion is communicated to the gyrating spindle R and breaker V, which is carried thereon. I therefore do not extend said diaphragm entirely across the frame, but leave an opening on the front or lower side, which I close with theremovable plate T, which may be made of castiron; and, to increase the durability of the diaphragm G and plate T, a covering or skin, t, of boiler-iron, may be employed. The baseplate c is securely bolted to the section F, and at its center it is provided with the hub h and the bottoni plate, Y. The hub h is bored out true, and is fitted with a bushing, t', which constitutes the bearing for the hub Q of the main bevel-wheel O, though said bushing may be dispensed with without changing the operation of the machine. and is also bored out true and concentric with the axis of said wheel, and is fitted with a bushing, P, in which there is bored an eccentric bearing for the bottom of the gyrating spindle R. This bearing is slightly inclined to the vertical, so that its axis will intersect the axis of said wheel at a point within the box M where the spindle R has its upper bearing. On the bottom plate, Y,I place a wearing-plate, 7c, for the step for the spindle It. A corresponding wearing-plate, 7c', is inserted in the end of the spindle. At the rear side of the frame there is a pillowblock, m, secured to the frame, and bored for a bearing for the counter-shaft a, on which are placed the pulley NV, with its clutch x, and the pinion p, which is in mesh with the wheel O. The upper end of the spindle has sometimes been provided with a spherical journal and sometimes with a tapered bearing-wrist gyrating in a cylindrical bearing-box. My improvement differs from these in having a cylindrical journal fitted to a cylindrical box, free to gyra-te in the frame, whereby I make the bearing cheap, durable, and easily repaired by substituting a new box for a worn one. Therefore the upper journal `or wrist of the spindle R is made cylindrical, and the bearing bush or box u is properly iitted thereto. The exterior surface of the box u is tted to the frame-box M at one point of its length, but is free at all other points by being made tapering. Thereby the revolving motion of the spindle is in its long-surfaced bearing in the box a, and the limited gyrating motion is between said box and the box M. A pin or screw, d, inserted through the box M into the box a prevents said box from revolving with the spindle. The outer edges of the box u are extended upward, to form a cup to retain the lubricating-oil, and the whole is covered by a cap, N, which prevents the entrance of dust, d irt, or water.

Between the shoulder e of the hub Qand the end of bush i, I place two or three wearing plates or washers, q, which sustain the weight The hub Qis hollow, l

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of the wheel O, and also afford easy means for adjusting its height and mesh with the pinion p.

At the upper end of the hub l1, there is a iiange, f, preferably turned over inward at its upper edge and fitted to the side of the hub Q, so as to constitute a closed channel, B, to receive and distribute the lubricant to the wearing-surfaces of the hub Q. There is also an oil-receptacle, o', at the top of the wheel O, constituted by the upwardly-extended edges of the hub Q and the cap 02, which is secured in place and to the spindle R, and closed at its top by the leather collar c, and a divided strap-clamp, o3, having ears o4 for bolts to unite the parts of said strap. Holes b b permit the oil to flow from the chamber o to the chamber B and the hub bearing. The spindle R has an axial perforation, S, whereby oil may pass from its upper end down to the bearings at the lower end, and transverse perforations l 2 3 4 5 6 7 8 9, (shown in Fig. 1,) more or less in number, are .made to permit the oil to escape from the perforation S to the wearing-surfaces, and when the perforation S is filled with oil the pressure of the liquid column will force oil through the transverse perforations and insure the proper lubrication of the wearing-surfaces, and if the pressure of the liquid column is insufficient a box may be attached to the upper end of the spindle, which is threaded, as at g, for that purpose, and a pump may be applied withv any pressure required. The action of the machine of this kind is so violent that the wearingsurfaces require lubrication more freely than is required by n1achines of ordinary duty, and it is also desirable to store and return to the bearings the partly-worn oil. For this purpose I provide the chamber r at the bottom of the hub lz, and

Y provide a draw-off cock, E3, whereby all the lifted by the stone or mineral becoming free oil may be drawn off. [A lateral inlet, E, is also provided, through which air may be admitted to facilitate the exit of the oil, and to force it out, if necessary, by air under pressure. The top of the sleeve g is closed by a cap, G2, through which the spindle R passes. Interlocking lugs o w prevent said cap being spindle turning directly in its socket of the wheel O. Said wearing-surfaces may be babbitted, if desired. A vertical oil-hole, z, extends from the chamber o to the space r, with lateral holes extending therefrom to the wearing-surfaces, as shown.

Having described my invention, I claim as new- 1. The frame-section F of a gyrating stonebreaker, provided with the inclined partial diaphragm G, having the sleeve g, and cast integral with said frame-section, combined with the removable plate T, whereby they chute is completed and the wheel O made easily accessible. f

2. The gyrating spindle R, provided with a cylindrical journal or wrist at each end, and the wheel O, having the eccentric bearing for the lower end of said spindle, combined with the-box M, and the bearingbox u, iitted to the upper end of said spindle, and adapted to gyrate in said box M, as set forth.

3. The stationary box M, combined with the box u, having the interior cylindricalbear4 ing, and adapted to gyrate in said box M, the i pin d to prevent rotation of said box u, and the gyrating spindle R, substantially as set forth.

4. The box M and spindle R, combined with the box a, provided with a cylindrical perforation fitted to the cylindrical wrist of the spindle R, its upper edges extended upward to constitute an oil-cap, as set forth, and with its diameter slightly smaller at its upper than at its lower end, and thereby adapted to rock and gyrate in the box M, as set forth.

5. rlhe wheel O, provided with the oil-cham ber o', and the internal bushing, l), provided with an eccentric bearing for the lower end of the spindle R, combined with the oilchamber B in the upward extension of the hub h, and the spindle R, with a longitudinal perforation, S, and transverse outlets l 2 3 4 5 6 78 9, whereby oil received at the top of the spin- IOO dle is delivered to the wearingvsurfaces at and IIO 

